They were on separate landmasses, but I'm not really sure this answers the question, you should try just asking google.
Answer:
Granite
Explanation:
granite is formed when magma slowly cools and crystallises long before it is able to reach the earths surface.
i think the answer may be blood diamonds
Answer:
Zicrons
Explanation:
The oldest of the zircons in the study, which came from the Jack Hills of Western Australia, were around 4.3 billion years old—which means these nearly indestructible minerals formed when the Earth itself was in its infancy, only roughly 200 million years old.